Sheriff's deputies arrested a Northern California mother for allegedly grabbing a fifth grader by the throat after her son pointed him out as the student who was bullying her younger daughter. Mark Matthews reports. (Published Monday, May 19, 2014)

Sheriff's deputies arrested a Northern California mother for allegedly grabbing a fifth grader by the throat after her son pointed him out as the student who was bullying her younger daughter.

Delia Garcia-Bratcher was booked Saturday into Sonoma County Jail on a felony charge of inflicting injury on a child a day after deputies took her into custody at Olivet Elementary Charter School in Santa Rosa.

The Sonoma County District Attorney's Office on Monday said that Garcia-Bratcher did not yet have a scheduled court date.

Snyder said she will work to prevent Garcia-Bratcher from stepping onto the campus again, and that she was not aware of any bullying allegations. Now that she is aware, she said, she will "investigate fully."

The arrest came after a Sonoma County Sheriff's deputy went to the school on Willowside Road following a report of "child abuse."

When the deputy got there, school staff said a child had been "reportedly assaulted by a parent."

Lt. Steve Brown told NBC Bay Area that a child heard the mother say to the 12-year-old boy, "Don't bully my little girl. This is your warning. Next time I'll tell," before allegedly wrapping her fingers around his throat. She had entered campus at lunchtime, the deputy wrote in his report, without signing in.

According to the deputy, Garcia-Bratcher asked her son to identify the child who had been bullying her daughter. Deputies say she allegedly grabbed the student by the throat in front of many other students, including her own son. No adults witnessed the assault, the deputy said. The deputy did not detail what the alleged bullying was about. And later in the day, the sheriff's office issued a statement that "we were unable to find any nexus between the two students and are unable to determine if any bullying ever occurred between the two."